Reddit is the only all encompassing hobbyist forum still remaining on the internet.
I follow my favorite youtubers on their subreddit. I have spent countless hours discussing manga, cars, soccer, politics (in a civil way), find prog bands, food science and so much more.
I can say this confidently: "None of those activities would be as much fun if I did not have my fellow redditors to enjoy it with."
The main subreddits are trash, but that's the point. Reddit might just be able to rapidly scale up to letting normies in, without letting the first-adopters feel like reddit has lost its charm. Specifically, there will be 2 reddits. One would be the front page with a tiktok-esque stream of memes, outrage and short videos; and the other would be the niche subreddits that function similarly to hacker news in terms of strict moderation and deliberate inaccessibility.
Now I am not sure if this genius of reddit is intentional or if the founders stumbled into what is probably the only survival plan for a business where scaling up inevitably leads to a huge drop in the value proposition of the platform itself.
Conde Nast made an incredible acquisition; and not having the market pressures of a public company might have something to do with Reddit's success.
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edit: because I must shill for them some more
Reddit is also THE PLACE on the internet for the best surreal humour and organic decentralized art as social experiences. Subreddits like r/196, r/2meirl42meirl4meirl and r/kenm are completely inaccessible without knowing the meta-story around them, but have me rolling on the floor like nothing else. r/place is the most well known reddit decentralized art experience, but r/hqg, and r/youdontsurf create humor and art from a constrained format that can be so meta that the entire front page could be purely self-referential.